websocket服务器

绑定client端的ip和port,监听client的消息,如果对方发送一个json格式的字符串,就给对方回复一个json格式的"type-join"的字符串,实现交互

cpp 复制代码
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <winsock2.h>
#include <windows.h>
#include <libwebsockets.h>
#include <json-c/json.h>

#define MAX_JSON_SIZE 1024

static struct lws *client_conn = NULL;

static int callback_ws(struct lws *wsi, enum lws_callback_reasons reason,
                       void *user, void *in, size_t len)
{
    switch (reason) {
        case LWS_CALLBACK_CLIENT_ESTABLISHED:
            printf("WebSocket Client Connection established\n");
            client_conn = wsi;
            break;

        case LWS_CALLBACK_CLIENT_RECEIVE:
            printf("Received data from server: %s\n", (char *) in);
            // Parse JSON
            struct json_object *jobj, *jtype;
            jobj = json_tokener_parse(in);
            if (jobj == NULL) {
                printf("Error parsing JSON data\n");
                break;
            }
            // Get type field
            if (!json_object_object_get_ex(jobj, "type", &jtype)) {
                printf("JSON object does not contain type field\n");
                json_object_put(jobj);
                break;
            }
            const char *type = json_object_get_string(jtype);
            printf("Received JSON with type %s\n", type);
            // Check if type is join
            if (strcmp(type, "join") == 0) {
                // Send response JSON with type join
                char *response = "{\"type\": \"join\"}";
                lws_write(client_conn, (unsigned char *) response, strlen(response), LWS_WRITE_TEXT);
            }
            json_object_put(jobj);
            break;

        case LWS_CALLBACK_CLIENT_WRITEABLE:
            break;

        case LWS_CALLBACK_CLOSED:
            printf("WebSocket Connection Closed\n");
            lws_context_destroy(wsi->context);
            break;

        default:
            break;
    }

    return 0;
}

int main(int argc, char **argv)
{
    WSADATA wsa_data;
    int result = WSAStartup(MAKEWORD(2, 2), &wsa_data);
    if (result != 0) {
        printf("WSAStartup failed with error: %d\n", result);
        return -1;
    }

    const char *server_address = "192.168.1.100";
    const int server_port = 8080;

    // Initiate libwebsockets
    struct lws_context_creation_info info;
    memset(&info, 0, sizeof(info));
    info.port = CONTEXT_PORT_NO_LISTEN;
    info.protocols = (struct lws_protocols[]) {
        { "ws", callback_ws, 0 },
        { NULL, NULL, 0 }
    };

    struct lws_context *context = lws_create_context(&info);
    if (context == NULL) {
        printf("Error creating websocket context\n");
        return -1;
    }

    // Connect to server
    struct lws_client_connect_info connect_info;
    memset(&connect_info, 0, sizeof(connect_info));
    connect_info.context = context;
    connect_info.address = server_address;
    connect_info.port = server_port;
    connect_info.path = "/";
    connect_info.host = connect_info.address;
    connect_info.ietf_version_or_minus_one = -1;
    connect_info.ssl_connection = 0;
    connect_info.client_exts = NULL;
    connect_info.method = "GET";

    struct lws *conn = lws_client_connect_via_info(&connect_info);
    if (conn == NULL) {
        printf("Error connecting to server\n");
        return -1;
    }

    // Wait for connection to be established
    while (client_conn == NULL) {
        lws_service(context, 0);
    }

    printf("Connected to server\n");

    // Wait for data to be received
    while (true) {
        lws_service(context, 0);
    }

    lws_context_destroy(context);

    return 0;
}
相关推荐
fat house cat_17 分钟前
【netty】基于主从Reactor多线程模型|如何解决粘包拆包问题|零拷贝
java·服务器·网络·netty
天***889618 分钟前
HTTP 协议的常用方法有哪些?(GET、POST、PUT、DELETE、PATCH)各自的作用和区别是什么?
网络·网络协议·http
wanhengidc19 分钟前
云手机和虚拟机的区别都有哪些?
运维·服务器·安全·智能手机·玩游戏
williamdsy25 分钟前
【Docker】[特殊字符] Docker 部署完全指南 - 从本地开发到云服务器
服务器·docker·开发部署流程
码农周1 小时前
从零搭建vsftpd服务器:避坑指南+实战解决方案
运维·服务器
jingshaoyou2 小时前
ubuntu 搭建SVN服务器
服务器·ubuntu·svn
nono牛3 小时前
Linux基础指令大全(快速上手)
linux·服务器·windows·智能手机
<但凡.3 小时前
Linux修炼:库制作与原理(一)
linux·运维·服务器
程序员大柱3 小时前
推荐一个免费的IP地址库:纯真社区版IP库
网络·网络协议·tcp/ip
Maple_land4 小时前
编译器的“隐形约定”与本地变量:解锁Linux变量体系的关键密码
linux·运维·服务器·c++·centos